Refactoring: Remove trivial uses of OutputCapture.

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py
index fd8fb7c398a3d628eb0da45bb46c6d96fe91be17..f562d2b4ba54e6490ae18453413655ec6e301c01 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/port/base_unittest.py
@@ -56,15 +56,12 @@ class PortTest(unittest.TestCase):
 
     def test_pretty_patch_os_error(self):
         port = self.make_port(executive=MockExecutive(exception=OSError))
-        oc = OutputCapture()
-        oc.capture_output()
         self.assertEqual(port.pretty_patch_text("patch.txt"),
                          port._pretty_patch_error_html)
 
         # This tests repeated calls to make sure we cache the result.
         self.assertEqual(port.pretty_patch_text("patch.txt"),
                          port._pretty_patch_error_html)
-        oc.restore_output()
 
     def test_pretty_patch_script_error(self):
         # FIXME: This is some ugly white-box test hacking ...